Percy Harvin, one of the big reasons the Seattle Seahawks have generated support as a potential Super Bowl team, will start training camp on the physically unable to perform list, NFL.com reported Thursday.

According to the story, Harvin has a possible slight tear in the labrum of his hip and will get a second opinion early next week. ProFootballTalk.com reported the injury was discovered in an MRI Thursday and could require surgery.

Harvin was acquired from the Vikings for several draft picks (including a first-rounder), and his electric ability is supposed to boost the Seahawks' offense to the league's upper tier.

Harvin had participated in minicamp practices with the team in June, so the news came as a surprise. But Harvin has a history of injury problems, including an ankle issue that sidelined him the final seven games of last season. He reportedly has been able to move past issues with migraine headaches that set him back his first two years in the NFL.

Harvin has played a full season only once—in 2011—in his first four years in the league. With his ability to line up all over the field, he is expected to give Russell Wilson a high-level playmaker and touchdown maker.

In his four years with the Vikings, Harvin put up 3,302 receiving yards, 683 rushing yards and 3,183 kickoff return yards. He has 29 career touchdowns—20 receiving, four rushing and five on kick returns.